FETs a pehea e hana

FETs i ka poe mea uholo uila manaʻo, ka loina o ka hana o ka i ua muli ma ka ia'ku o ka transverse uila kahua o modulation o ka mea uholo uila mea.

Ka hanohano nō hoʻi hiʻona o kēia 'ano o ka mea o ia ka transistors kahua ia i ke kiʻekiʻe anakahi uila ka waiwai, a me ka ia'ku kiʻekiʻe i ka mea e hoʻopā ai.

Ma kēia mau manao maalea ma ka hanaiia'na mai o ka uila papa wale ia nā moku halihali mokulele o ka iaʻano ka pae'āina (electrons).

Aia he mau ke ano o ka FETs:

- me he TIR 'ole, a laila mea hiki ke hooheheeia, i ukali ia e ka dielectric, laila, i ka mea uholo uila (MIS);

- mālama 'me ka pn-huina.

Ka 'ole o ka simplest pākali hoʻolele kahua ole ka loaʻa o ka papa i o ka mea uholo uila mea me kekahi pn-hoʻololi wale nō i loko o ke kikowaena a me ka ohmic hui' ana ma luna o nā kihi.

Ke'ūholo uila i loko o ia ka mea ana i ka poe i kaheaia ke alakaʻi Kanal kauoha nā moku halihali mokulele kumu, a me ka'ūholo uila ma a na nā uila aʻa lolo i waho mai, mai ke kai - moni loa.

I kekahi manawa e hana ana ia i ka ikaika kī mea mai o ka mea. No laila, i ke kapili ana i kekahi lolouila? Ieaoa mea pinepine pono, e kaha i ka FET.

E hana i kēia, vypayat lima kūlana kiʻekiʻe, no ka mea, ka mea, eʻaʻole e hiki i ka nānā i ka uila huakai kaapuni. A laila, i kēia kekahi olelo, ke hoomau aku i ka a Kūʻai.

Kahua kanawai transistors i mau pae'ōnaehana 'ole - hōʻeuʻeu a me ka kī.

Pākali hoʻolele ana - o kekahi ma i ka pākali hoʻolele mea i loko o nā Hawaii - i loko o ka oo wehe paha oo paʻa. Akā, i kēia palapala ana, i ka wa a ka ke keʻena Ua hamama hapa 'ia kahi e.

I ka maikaʻi hihia, i ka wa a ka pākali hoʻolele ka "wehe", a laila o ka ai-kapaia saturation aaeei, impedance ma waena o nā maʻi "moni loa" a me ka "kumu" i 'Aʻohe.

Power poho i ka hamama ana anakahi uila i Konakele. Huahana (like i Aʻohe) i loko o ka nui o kaʻikena. Nolaila, mana dissipation mea Aʻohe.

Ma ka cutoff pololei, a laila, i ka wa o ka pākali hoʻolele palaka, ka ia'ku ma waena o kona "moni loa / kumu alanui" ho oholo mālama i ka infinity. Mana dissipation i loko o ka paʻa ana o ka huina hoonui o ka anakahi uila ma kaʻikena e like a like ke 'Aʻohe. Alaila, mana poho = 0.

Ua huli mai i ka ki pololei o transistors mana poho o Aʻohe.

Ma ka hana pono, i loko o ka wehe pākali hoʻolele, maoli ai, kekahi ia'ku "moni loa / kumu alanui" e e ike. Me ka paʻa pākali hoʻolele i kēia mau hopena a kaʻikena haʻahaʻa cia nō ia lŘlŘ. Nolaila, mana poho he kūpaʻa pololei ma ka pākali hoʻolele i loko o ka ka palena haʻahaʻa.

A dynamically, i ka wa a ka pākali hoʻolele ua paa hou mai la paha wehe, boosts kona laina māhele i ka pae'ōnaehana wahi ma ka pono e kahe ana ma ka pākali hoʻolele, conventionally ka hapalua o ka moni loaʻikena. Akā, anakahi uila "pohō ai / kumu" pinepine ka hapalua o ka mea i kā mākou cia ihoiho. Nolaila, i ka hōʻeuʻeu e auaaeaiea pololei hoʻolako pākali hoʻolele nunui mana poho, a ho'ēmi i kā ka "ole" ke ki pololei kupaianaha waiwai.

Akā, ma ka huli, hooloihi ae i waiū o ka pākali hoʻolele i loko o ka hōʻeuʻeu pololei mea nui uuku ma mua o ka lōʻihi o ka noho ana i loko o ka kūpaʻa pololei. E like me ka hopena, i ka ka hoʻokōʻana o ka pākali hoʻolele ke kahua i hana i loko o ka hoʻololiʻana ano, ka loa kiʻekiʻe, a hiki e kanaiwaʻekolu i kanaiwa-ewalu pakeneka.

transistors kahua hookoia i hana i loko o ka luna pololei, e lawa hoʻomano hoʻohana i ka mana hoʻololi 'huahelu, he lāʻau ikiʻai wale ka mana kumu, ke kuʻina o kekahi transmitters auaiaea, a pela aku.